Vise-jaw cap



(No Model.) w r C. D. BING VISE JAW No. 455,551. Patented July '7,- 1891.

INVENTUB q ATTORNEYS UNITE STATES CHARLES 1). BINeI-IAM, or WATERTOWN, NEW-roan,"

VISE-JAW CAP.

SPEEIFICATION forming part of Letters Patent No. 455,651,dated July '7, 1891.

Application filed June 4, 1sss.' Serial No. 276,028. (No model.)

To all whom it may concern.-

' the State of New York, have invented new and useful Improvements in Vise-J aw Caps,-

of which the following, taken in connection with the'accompanying drawings, is a full, clear, and exact description.

This invention relates to caps or linings applied to the faces of vise-jaws for the purpose of protecting finished surfaces of articles gripped between said jaws from injury incident to the grip of the-jaws. Such caps have hitherto been formed of sheet metal, usually copper, by cutting out a blankto the required size and shape, clamping a portion thereof between the vise-jaws, and bending the top portionof the blank over the top of the jaw, and in some instances said caps have also been cast of metal and of a shape to fit the vise-jaw. In either case, however, the grip ping-face of the cap was smooth or compara tively smooth, and in consequence thereof incapable of securely .holding in the vise a cylindrical body, so that it would resist any great strain exerted on it in a direction parallel to the plane of the face of the vise-jaw while operated on.

My intention consists in a novel construction of a vise-jaw cap which effectually overcomes the aforesaid difficulty and possesses other advantages, as hereinafter fully described, and specifically set forth in the claim.

In the annexed drawings, Figure 1 is an isometrical perspective .view of two visejaw caps embodying my improvements, and Figs. 2, 3, and 4. are respectively front, end, and rear elevations of the same.

Similar letters of reference indicate corresponding parts.

A represents the portion of the cap which rests against the face of the vise-jaw and serves as a lining for the same, and G is the flange, by which the cap is hung upon the top of the said jaw. The gripping-face of said cap I provide with grooves or recesses c 0, some of which are disposed parallel with the top edge of said face and others are diagonal at various angles across the face. By means forded asecure hold on the article between the vise-jaws.

I 'ofthese grooves the face of the jaw is af-* 5o The described vise-jaw cap I cast of malleable metal and with the flange 0 nearly or quite at-right angles to'the face portion A,

as represented by dotted lines in Fig. 1 of the drawings. A pattern made of this form is more easily drawn from the mold. The flange C is subsequently bent to the shape of the top of the vise-jaw by clamping the portion A between the jaws and applying the requisite pressure or strokes to the top of the said flange. "In casting articles having internal angles it is difficult' to produce such angles perfectly, owing to the breaking of the corners in the mold, and where articles thus imperfectly cast are designed to fit closely to an external angle of another article it is necessary'to file or out out the imperfect portions of the internal angle. To obviate this defect I form the vise-jaw cap with a recess 6 along the internal corner at the junction of the flange O with the portion A of the cap.

In avise-jaw cap formed with closed ends, as has frequently been the case heretofore, itis necessary to employ caps of difierent lengths to suit the different sizes of vise-jaws. To obviate this I leave the ends of the cap open and provide one end thereof with a stop or projection a, by which it abuts against the corresponding end of the vise-jaw, and in order to bring coinciding grooves c o of the explained.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

A removable vise-jaw cap comprising a vertical portion having its clamping-face -provided with grooves or recesses disposed at various angles across the same and an integral the State of New York, this 31st day of May, top flange curved to fit the vise-jaw, and the 1888. stop a, adapted to abut against the end of the q 7 V vise-jaw, substantially as specified. (JHAS' BINGHAM' 5 Intestimonywhereof Ihave hereunto signed Witnesses;

my name, in the presence of two Witnesses, JOHN A. BLAKE, at Vatertown, in the county of Jefferson, in

LOUIS GORMANN. 

